The second Release Candidate version of the upcoming Linux kernel 3.3 is available for download and testing, as Linus Torvalds announced in the last day of January 2012.
Linux kernel 3.3 RC2 brings various USB improvements, Radeon drivers, as well as some ARM, Btrfs, EXT2, CIFS, and PowerPC improvements.
"Anyway, apart from that mind-fart, there's nothing particularly odd here. The diffstat is pretty flat - indicative of mostly small changes spread out.
"Which is what I like seeing, and we don't always see at this point. There's some file movement (8250-based serial and the arm mx5 -> imx merge), but otherwise really not a lot of excitement. Good.
" - said Linus Torvalds in the announcement
Download Linux Kernel 3.3 RC2
right now from Softpedia. Remember that this is a development release and it is intended for testing purposes only.